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ANULARIA STELLATA
ANULARIA STELLATA
ANULARIA STELLATA
ANULARIA STELLATA ANULARIA STELLATA

ANULARIA STELLATA

pennsylvanian (Carboniferous)  // Mazon Creek - Illinois - USA 

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very large nodule duplex: 
ANULARIA STELLATA 
pennsylvanian (Carboniferous) 
Mazon Creek - Illinois - USA 
nodule size of 19 cm by 10 cm

 

very large nodule recto-verso: 

ANULARIA STELLATA 

pennsylvanian (Carboniferous) 

Mazon Creek - Illinois - USA 

nodule size of 19 cm by 10 cm

 

 

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